The Idea Factory International published and Compile Heart developed Hyperdimension Neptunia Re;Birth1 has been out in the West for around two years now, and on PC via Steam for a little over a year and a half. Not to mention, the Neptunia series just recently turned 6 years old a few days ago. Right on the heels of the 6th anniversary of the series, Idea Factory International announced that special deluxe content is coming to the PC version of Hyperdimension Neptunia Re;Birth1 in the form of a 30 track OST with tracks from both the English and Japanese releases, a special PC theme with icons and two wallpapers, and a 29 page digital art book. In addition to this, the PC version of Re;Birth1 will be released in Japan and a Japanese language option for the game proper will be available.
Furthermore, both Re;Birth1 and all DLC will have a 50% discount for a week after the deluxe content lands. The deluxe content can be acquired as DLC if you already have the game, as part of a Digital Deluxe edition if you don't have the game, or you can acquire Re;Birth1, the deluxe content and all DLC as part of a Digital Complete set.
Hyperdimension Neptunia Re;Birth1 is the second Idea Factory International published Steam title to get it, behind Megadimension Neptunia VII. The digital deluxe content for Neptunia VII included the same OST and artbook included in the PlayStation 4 version's collector's edition, albeit, in MP3 and PDF format, respectively. It also included some wallpapers to use as desktop backgrounds.
The deluxe content lands on August 24th, at 4 PM Pacific Daylight Time and August 25th in Japan. There will be instructions on the Steam store page for Re;Birth1 to activate the Japanese game language option. Please note that this refers to play language, as Japanese audio has always been available on Western releases of Re;Birth1. If you're looking for more tune to your Nep, you can pick up the Digital Deluxe content for 9.99 US when it lands on Steam.